A tool to use when you're changing the PTFE tube in your hot end of the MK3S+. Yes, they wear out so I change the PTFE tube every time I change the nozzle.
You have to hold the collet down while pulling the tube to get it out, and you have to lift the collet to lock it after you change the tube. This tool helps you do both.
The author marked this model as their own original creation.